update photo link (archive.org)

Author: johan12345

_includes/footer.html

@@ -71,6 +71,6 @@
 	<div class="credits">
 		Android, Google Play and the Google Play logo are trademarks of Google Inc ·
 		Website based on a template by <a href="https://github.com/emilbaehr/automatic-app-landing-page">Emil Baehr</a> ·
-		Photo by <a href="https://unsplash.com/photos/Q_MfGy0PQZw">Jenny Ueberberg</a> on <a href="https://unsplash.com">Unsplash</a>
+		Photo by <a href="https://web.archive.org/web/20221019150739/https://unsplash.com/photos/Q_MfGy0PQZw">Jenny Ueberberg</a> on <a href="https://unsplash.com">Unsplash</a>
 	</div>
 </footer>